From: Keith Packard <keithp@keithp.com>
Date: Wed, 18 May 2011 07:17:04 +0000 (-0700)
Subject: src-avr: Trap accidental restart
X-Git-Tag: 0.9.3~22
X-Git-Url: https://git.gag.com/?a=commitdiff_plain;h=f2c9234341b18d94c6056d72a496753c64619f08;p=fw%2Faltos

src-avr: Trap accidental restart

Use the LED output pin to notice when avr-demo accidentally restarts
and print out an error message in that case.

Signed-off-by: Keith Packard <keithp@keithp.com>
---

diff --git a/src-avr/ao_demo.c b/src-avr/ao_demo.c
index cb7ad786..d905cec6 100644
--- a/src-avr/ao_demo.c
+++ b/src-avr/ao_demo.c
@@ -35,10 +35,11 @@ main(void)
 	ao_clock_init();
 
 	ao_serial_init();
+
+	ao_led_init(LEDS_AVAILABLE);
 	ao_stdio_init();
 	printf ("stdio initialized\n");
 //	ao_debug_init();
-	ao_led_init(LEDS_AVAILABLE);
 	ao_timer_init();
 	ao_cmd_init();
 	ao_usb_init();
diff --git a/src-avr/ao_led.c b/src-avr/ao_led.c
index 0e69ee3a..5183140b 100644
--- a/src-avr/ao_led.c
+++ b/src-avr/ao_led.c
@@ -63,6 +63,10 @@ ao_led_init(uint8_t enable)
 {
 	ao_led_enable = enable;
 #ifdef AVR
+	if ((LED_DDR & enable)) {
+		printf ("oops! restarted\n");
+		ao_panic(AO_PANIC_REBOOT);
+	}
 	LED_PORT &= ~enable;
 	LED_DDR |= enable;
 #else